Call it what you want. Stoughton police are calling the headless shark carcass they found in the woods a mystery, the Enterprise reported.

The case is now also being investigated by the environmental police as well.

Two police officers made the discovery Sept. 30, when they traveled to Shuman Avenue after someone working in the nearby industrial park reported an awful stench.

About 30 feet into the woods those officers reeled in a surprise. They discovered a gray headless shark with a rope tied around its tail. The shark’s body, roughly 6 feet long, was in a drainage ditch surrounded by other debris, such as a rusted radiator and several couches.

“This is kind of obscure,” Stoughton Police Sgt. Brian Holmes said about the finding.

There are no suspects, and no arrests have been made yet.

Sharks have been swimming in the seas for more than 420 million years, according to experts.

This one, however, was at least 15 miles from the nearest beach, which would be Wollaston Beach in Quincy.